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Öğe Effect of somatic cell count on milk yield and composition of first and second lactation dairy cows(PAGEPRESS PUBL, 2015) Cinar, Mahmut; Serbester, Ugur; Ceyhan, Ayhan; Gorgulu, MuratThis study was carried out to investigate the effect of somatic cell count (SCC) on milk yield and milk composition in first and second lactation Holstein dairy cows. Thirty cows in first lactation and 49 cows in second lactation were used in the study. Animals were 15 +/- 9.87 days in milk. Individual milk samples were collected monthly from June 2009 to March 2010, and somatic cell counts, milk protein, milk fat, lactose and milk urea-N were determined. Four SCC groups were formed for determining effect of SCC on milk yield and composition. These groups were as follows: <= 200, 201-500, 501-999, and >= 1.000x10(3) cell/mL. It was observed that SCC had a high significant effect on milk yield, milk protein, milk lactose (P<0.01), total solids and milk urea-N (P<0.05), however, the effect of SCC on milk fat was not significant (P>0.05). This study indicates that high SCC negatively affects not only milk yield but also milk composition and quality.Öğe Effects of Feeding Regime Without Roughage on Performances and Rumen Development of Calves During Preweaning Period(ANKARA UNIV, FAC AGR, 2010) Goncu, Serap; Boga, Mustafa; Kilic, Unal; Gorgulu, Murat; Doran, FigenThe objective of the study was to investigate the effect of only concentrate diet on growth and rumen development of Holstein calves during preweaning period. Thirty female and nine male calves were allocated to three treatments. Nine male calves were also divided into three treatments to operate for rumen wall samples. First group was fed with a calf starter and alfalfa hay as free choice, second group was received calf starter only and third group were fed with a total mixed ration (TMR) during the pre-weaning period. The average daily gain of the free choice, calf starter only and total mixed ration groups were 528.39 +/- 29.82, 509.00 +/- 34.08 and 479.21 +/- 25.86 g respectively. The average daily feed intake of the groups were 672.75 +/- 69.86, 619.73 +/- 77.75 and 499.60 +/- 81.69 g respectively. Calf starter group showed similar performances to free choice and TMR group of calves (P > 0.05). Protozoa number were not significantly different among the treatments while total bacteria numbers were higher for calf starter group than the other two groups (P < 0.05). The calves received calf starter only had flatter and more branched papillae than did the other calves. These results revealed that it is possible to rear calf successfully without roughage during preweaning period.Öğe Performance and eating behaviour of crossbred goats in Mediterranean climate of Turkey(REVISTA BRASILEIRA ZOOTECNIA BRAZILIAN JOURNAL ANIMAL SCI, 2016) Koluman, Nazan; Boga, Mustafa; Silanikove, Nissim; Gorgulu, MuratThe objective of the study was to investigate milk yield and eating behaviour of crossbred goats, German Improved Fawn x Hair crossbred (GIF) and Saanen x Hair goats (S), in subtropical eastern Mediterranean climate of Turkey during early summer season. Eight GIF and eight S goats were individually housed in 1.5 x 1.5 m pens. Diurnal eating patterns were monitored by a system that recorded meal size and meal length. Milk yield (kg/day) was 1.77 in GIF and 2.0 in S goats, whereas milk production efficiency (kg feed/kg milk) was 1.15 in GIF and 1.07 in S goats. The differences between GIF and S goats in eating behaviour parameters were significant: the S goats had higher meal size and meal length and longer inter-meal interval, meal time, and eating rate within in each meal, but lower number of meals in comparison with GIF goats. German Improved Fawn x Hair crossbred and Saanen x Hair goats have similar lactation performance under good nutritional condition, but their eating behaviours are quite different.
