1.
Comparative Reproductive Efficiency Amonth Imported Holstein Friesian, Farm Bron Pure Bred Holstein Friesion And Sahiwal cows
by Shamim | Dr. Naeem Ullah Khan | Dr. Atta ur | Dr. Rashid A Ch | Faculty of Veterinary Sciences.
Material type: ; Format:
print
Publisher: 1988Dissertation note: The present study aimed at comparative performance of Sahiwal and Holstein Friesian animals under sub-tropical environmental conditions of Pakistan. The breeding records of 152 Sahiwal and 114 Holstein Friesian (90 Imported Holstein Friesian and 24 dauhters of originally imported animals kept at Harichand) cows were studied during 1978-82. An effort was also made to study the influence of some of the environmental factors on the parameters of reproductive traits. The main salient features of some of the economic traits studied are summarised as follows:
1) Imported, Local born Holstein Friesian and Sahiwal cows matured at 571.16 ÷ 14.13, 689.25 ± 32.74 and 937.27 ± 17.3 days while these heifers calved for the first time at the age of 855.98 ± 15.49, 989.25 + 31.95 and 1354.86 ± 17.72 days, respectively. The data indicate that Imported Holstein Friesian matured at an early age as compared to their daughters and Sahiwal (118-366 days), further Imported heifers calved 134 and 499 days earlier than local born Holstein Friesian and Sahiwal cows.
2) The number of services requiredpei'' conception was 1.47 + 0.054, 1.32 + 0.09 and 2.50 ± 0.09 for Imported Holstein Friesian, their progenies and Sahiwal. The results revealed that more number of services were required for conception in Sahiwal than the other two groups(1.03 to 1.18).
3) The average service period of Imported Holstein Friesian, Farm-born and Sahiwal were found to be 134.18 ± 16.72, 121.03 ± 12.09 and 153.53 ± 15.22 days which shows 13 and 32 days early conception after parturition in Farm-born than Imported Holstein Friesian and Sahiwal cows. Calving season has not affected this trait significantly.
4) The gestation length for Imported Holstein Friesian,their daughters and Sahiwal averaged 278.66 ± 1.21, 282.38 ± 2.38 and 287.86 ÷ 0.61 days, respectively. The data indicate that on an average Sahiwal cows carry their calves 9.20 and 5.48 days more than Imported and Farm-born Holstein Friesian. Season - hEd nc significant affect on Gestation length.
5) The overall average length of calving interval was 411.41 ÷ 17.56, 382.71 ÷ 11.52 and 441.05 ÷ 15.7 days in Imported Holstein Friesian,their progenies and Sahiwal cows. Minimum and Maximum inter-calving period was observed in Farm born and Sahiwal cows. Maximum calving occured in Winter, Autumn and Spring in Imported, Farm-born and Sahiwal while the minimum calving was observed in Summer and Autumn correspondingly.
6) The average lactation length was 323.91, 310.4 and 274.72 days in Imported Holstein Friesian,their daughters and Sahiwal
cows showing 49.19 and 35.68 days shorter duration of Sahiwal than Imported and Farm-born Holstein Friesian,respectively.
7) Milk production of 305 days was 3608.05, 3574.6 and
1727.42 litres respectively. The result revealed that Imported
Holstein Friesian produced significantly more milk than their
contemporary.
8) The dry period averaged 72.51 ÷ 8.76, 81.76 ± 7.15 and
175.35 ÷ 13.61 days in Imported Holstein Friesian,their progenies and Sahiwal while post-partum oestrous period was found to
be as 94.42 ± 10.19, 102.39 ± 10.71 and 93.3 ± 7.45 days correspondingly.
9) The sex ratio of males and females was 59.15:40.85, 67.13 : 32.69 and 57:43 in Imported Holstein Friesiañ, Farm-born and Sahiwal, while culling and mortality percentage was 33.33 and 18.88 in Holstein Friesian while the corresponding figures for Sahiwal 43.42 and 1 .13 per cent.
10) The reproductive efficiency of Imported Holstein Friesian, Farm-born and Sahiwal cows averaged 88.83 ± 1.95, 88.56 ± 2.7 and 85.36 ÷ 14.27 percent respectively. The analysis of variance showed non significant difference in the reproductive efficiency of all the three groups.
Although milk production is higher than Sahiwal, however heigh incidence of mastitis and mortality were the major problems in Holstein Friesian. Further Improvement can be made through controlling mortality and mastitis. To import the exotic breeed in N.W.F.P. was the first attempt, so furthrer investigations are required to draw conclusions on the performance of their crosses with non-descriptive cattle breeds in N.W.F.P. under rural conditions.
Availability: Items available for loan: UVAS Library [Call number: 1132,T] (1).
3.
Determination Of Multiple Anthelmintic Resistance Against Haemonchus Contortus In Sheep In Azad Jammu And Kashmir
by Shoaib Husnain (2015-VA-1337) | Dr. Muhammad Avais | Dr. Asim Shamim | Dr. Jawaria Ali Khan | Dr. Muhammad Oneeb.
Material type: Publisher: 2017Dissertation note: Parasitic problem is a key restriction of ruminant production which leads to reduce production and causes huge financial loss to small ruminant industry by inhibited growth, low production and amplified vulnerability of animals to other infections. The production losses are due to lowered feed intake and reduced efficiency. These economic losses may be due to chronic and subclinical infections in small ruminants. Sheep of different breeds of both sexes from different age groups were included in this study. Fresh fecal samples were collected randomly from sheep and were stored at4°C before microscopic examination. The Eggs per Gram (EPG) was calculated through modified McMaster technique (Coles, 1992). Samples were scanned for the presence of Haemonchus infection and the EPG was done before the administration of anthelmintic. Infected animals having EPG more than 500 were included in the groups for therapeutic trial. 10 animals were added in each group and each group was given different anthelmintics i.e. Albendazole, Oxfendazole, levamisole and ivermectin. A second sampling was done at 7th day post treatment and 3rd sampling was done at 14th day after drug administration to calculate post-treatment EPG to find out the FECR efficiency of the drugs used. The anthelmintics were administered to each group at recommended dose rate as mentioned in table 3.1.Pre-treatment EPG was related to the Post-treatment EPG and the % effectiveness of each anthelmintic was determined by using the efficacy formula. An in vitro egg hatch test was performed by using different preparation of anthelmintic prepared by serial dilutions. Eggs were incubated with these preparations and the percent hatching was determined and the data obtained was analyzed by probit analysis and the LC50 was calculated. The LC50 calculated for albendazole was 0.89ug/ml and that of oxfendazole was 1.09ug/ml which is much higher from the discriminating dose that is 0.1ug/ml which indicated the presence of resistance against these anthelmintics. Low dosing and aggressive use of anthelmintics may have cause the resistance against these anthelmintics. Other factors may include mixed farming and the movement of animals from one place to another which is responsible of dispersal of resistant strains. The present study suggests an alarming situation of anthelmintic resistance in Azad Jammu and Kashmir against common available anthelmintics that is albendazole and oxfendazole. A proper technical knowledge, awareness and alertness is necessary to overcome this problem in order to improve the small ruminants production especially sheep to up raise the livelihood of small livestock farmer. It is the demand of the day to introduce new control strategies by introducing modern anthelmintics and a proper worm control schedule according to the recommendations to avoid such problems in future. Availability: Items available for loan: UVAS Library [Call number: 2819-T] (1).
