Effects of crossing and environmental factors on production and some constituents of milk in Ossimi and Saidi sheep and their crosses with Chios
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Genome-wide association study for milk production of Awassi sheep in Jordan
2022, Journal of the Saudi Society of Agricultural SciencesCitation Excerpt :Al-Samarai et al. (2014) pointed that the total milk yield (TMY) and lactation period (LP) in Iraqi Awassi sheep were 103.57 ± 3.63 kg in 107.44 ± 1.47 days, respectively. Parity and year of lactation were found to have significant effect on MY and LP results, which agree with those reported by similar studies (Jawasreh and Khasawneh, 2007; Jawasreh et al., 2010; Hassan, 1995; Ploumi et al., 1998). The significant effects of year of lactation on milk production may be due to the differences in management systems, especially to the availability of pasture (Al-Samarai and Al-Anbari, 2009).
Use of Wood's model to analyze the effects of milking methods on lactation curve in sheep
2013, Small Ruminant ResearchCitation Excerpt :These values agreed with Zamiri et al. (2001) and Ribeiro et al. (2004, 2007) who stated that fat and SNF percentage was increased by injection of oxytocin to ewes. Except fat percentage in OT group, the chemical components of milk were not affected by different ewes ages, which was in agreement with the findings of other researchers (Abd Allah et al., 2011; Hassan, 1995). Fat percentage was lower (P < 0.05) in older ewes compared with that of younger ewes, which was in line with the results by Novotná et al. (2009) and Abd Allah et al. (2011).
Effects of flock, year and season on the quality of milk from an indigenous breed in the sub-Mediterranean area
2011, Small Ruminant ResearchCitation Excerpt :Milk production systems based on grazing pasture are frequently subjected to climatic conditions and meteorological events that influence the quantity and quality of pasture (Lucey, 1996; Pulina et al., 2006). Effect of year on composition of milk as reported by Ploumi et al. (1998) for flocks of Chios sheep, Macciotta et al. (2005) for flocks of Sarda goats, proved the effect of year on fat and protein content, while Hassan (1995) did not find any significant effect of the year on composition of milk of Ossimi and Saidi sheep and their crosses with Chios. In our study (Table 2) significant effect of year on the content of lactose, protein, casein, non-protein nitrogen, SCC, BC has been proven (P < 0.05).
Effects of lambing season and stage of lactation on ewe milk quality
2004, Small Ruminant ResearchThe changes in some blood metabolites associated with the physiological responses in sheep
2002, Livestock Production ScienceGenetic variation of lactation curves in dairy sheep: A Bayesian analysis of Wood’s function
2001, Livestock Production Science