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Articles by K. Sarbiland
Total Records ( 2 ) for K. Sarbiland
  Khurshid. A. , M. Farooq , F. R. Durrani , K. Sarbiland and N. Chand
  The present study was conducted on eggs of Japanese quail maintained in cages at the research unit, NWFP, Agricultural University, Peshawar, Pakistan. Five hundred eggs selected at random were broken to record data on egg weight (g), egg length (cm), egg width (cm), shell weight (g) and shell thickness (mm). Another 500 eggs were put in the incubator after discarding undesirable eggs and recording data on egg weight, egg length and egg width. Egg weight was better predictable from egg width and length. Following equations were developed to predict egg weight from egg length and width; (Equation 1) Ŷ= - 3.3133600 + 1.835144(X1) + 2.655127(X2), (Equation 2) Ŷ= 1.970096 + 2.252730(X3) and (Equation 3) Ŷ= - 1.0109318 + 3.616882(X4). Where; `Ŷ `was predicted egg weight, X1 and X3 the egg length and X2 and X4 the egg width for every equation separately. Following equations were developed for predicting eggshell weight from egg weight, length and width; (Equation 4) Ŷ=- 0.521102+0.310761(X5) +0.4074 (X6), (Equation 5) Ŷ=0.138189+0.062933(X7) +0.233078(X8) and (Equation 6) Ŷ=- 0.001150+0.071568(X9) +0.311496(X10). Where Ŷ was predicted eggshell weight, X5 and X8 were egg length, X6 and X10 are egg width and X7 and X9 were egg weight (g), respectively. Shell thickness was predictable with sufficient accuracy from egg weight, width and length and following equations were developed to predict it; (Equation 7) Ŷ= 0.154646 + 0.076448(X11) and (Equation 8) Ŷ= 0.154721 + 0.000694(X12) + 0.073939(X13). Where `Ŷ ` was predicted eggshell thickness, X11 and X13 the egg width and X12 the egg weight for each equation separately. Weight of egg albumin was predictable from the following equations; (Equation 9) Ŷ= - 0.685557 + 0.460613(X14) + 0.079842(X15) + 0.412241(X16), (Equation 10) Ŷ= - 0.553150 + 0.468198(X17) + 0.426649(X18), (Equation 11) Ŷ= 0.279557 + 0.468198(X19) and (Equation 12) Ŷ= - 2.128934 + 0.925133(X20) + 1.63522(X21). Where `Ŷ ` was the predicted weight of egg albumin, X14, X17 and X19 the egg weight, X15 and X20 the egg length in cm and X16, X18 and X21 the egg width in cm for each equation separately. Weight of egg yolk could be predicted from the following equations; (Equation 13) Ŷ= - 0.618041 + 0.339520(X22) + 0.156591(X23), (Equation 14) Ŷ= - 0.303204 + 0.355813(X24), (Equation 15) Ŷ= 0.003214 + 1.141682(X25) and (Equation 16) Ŷ= 0.050845 + 0.921437(X26). Where, Ŷ was predicted weight of egg yolk, X22 and X24 were the egg weight in grams, X23 and X25 the egg width in cm and X26 the egg length in cm for each equation separately. Weight of the newborn chick was better predictable from egg weight, width, length and egg shape index (equation 17). Ŷ = -5.558612 + 0.629504(X27) - 0.839306(X28) + 1.246874(X29) + 0.050482(X30) . Where; `Ŷ ` will be the predicted weight of the new born chick, `X27` the egg weight, `X28` the egg width, `X29` the egg length and `X30` the egg shape index. The equations developed for each trait are to be used in the order given to ensure better accuracy of the results.
  Murad Ali , M. Farooq , F. R. Durrani , N. Chand , K. Sarbiland and A. Riaz
  The present study was conducted on broiler breeders maintained in 24 different farms located in Mansehra and Abbotabad to investigate egg production performance and develop standard limits for production traits of economic importance. Average number of day-old chicks received at a broiler breeder farm was 19076.29, out of which 16449.08 birds attained sexual maturity and were housed in laying houses. Total hens housed represented 14037.32 females and 1559.70 males (a male to female ratio of 1:9). Reserved male stock (852.06 birds) was 5.18% of the total population. Average mortality during 323.46 days of growth and production period was 13.77%, representing 2.97, 4.99 and 5.81% mortality during brooding, growing and laying periods, respectively. Average age at point-of-lay, age at peak-of-lay and egg laying period were 164.67, 232.83 and 155.46 days. Age at point-of-lay (r = 0.227) and age at peak-of-lay (r = 0.333) were found positively but non-significantly correlated with total mortality in a flock. On the other hand flock size was found negatively correlated with age at point (r = -0.052) and age at peak-of lay (r = -0.415; p<0.04). Egg laying period was found negatively but non-significantly correlated with flock size (r = -0.147) and positively correlated with total mortality in a flock (r = 0.255). Egg laying period was found positively and significantly (P<0.027) associated with percent lay (b = 5.770). Average peak percent lay and percent lay was 83.09 and 59.67%, respectively. Percent lay was found non-significantly and positively correlated with flock size (r=0.184) and mortality ( = 0.085). Similar findings were observed for peak percent lay. Percent lay was found positively and significantly (P<0.033) associated with peak percent lay (b = 0.625). Peak percent lay was found negatively associated with age at peak of lay (b = -0.324; P<0.001) and positively associated with age at point of lay (b = 0.891; P<0.001). Average hen-day and hen-housed egg production was 103.32 and 95.10 eggs, respectively. Hen-day (r = -0.067) and hen-housed egg production (r = -0.074) was found negatively and non-significantly correlated with flock size. Hen-day egg production was found positively associated with peak percent lay (b = 1.600; P<0.035) and egg laying period (b = 0.627; P<0.001). Percent lay, peak percent lay, egg laying period and hen-day and hen-housed egg production was lower than that reported in the literature. Standard limits for minimum number of hens to be housed, maximum level of mortality, maximum age at point of lay, maximum age at peak of lay, minimum peak percent lay, minimum percent lay, egg laying period in response to percent lay and egg laying period in response to hen-day production were 4172.21 birds, 13.11%, 164.36 days, 35.33 weeks, 79.99%, 67.64%, 28.06 weeks and 65.54 weeks, respectively. The standard limits mentioned for various traits shall be maintained in order to make broiler farming more productive.
 
 
 
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