Effects of Lactation Stage and Parity on Milk Yield, Composition and Properties of Organic Sheep Milk

Novotná, L.; Kuchtík, J.; [Sbreve]ustová, K.; Zapletal, D.; Filip[cbreve]ík, R.

doi:10.1080/09712119.2009.9707034

Cited by 21 publications

(22 citation statements)

References 10 publications

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“…On the contrary, Sevi et al (2000) found a signifi cant eff ect of this factor on contents of all milk components under their study; also Konečná et al (2011) reported a signifi cant eff ect of the PA on contents of total solids (TS), fat (F) and total protein (TP). However, Marìa and Gabiña (1993) stated that the PA aff ects only contents of TS not F. The average DMY and lactose (L) content were during the whole lactation period slightly lower for the third lactation (PA3) compared with the second (PA2) lactation, which is consistent with the results published by Ploumi et al (1998), Novotná et al (2009) and Pokorná et al (2010). The average value of content of TP was slightly higher on the PA2 in our experiment, however on the other hand, Sevi et al (2000) and Oravcová et al (2007) reported higher average TP content on the PA3.…”

Section: Resultssupporting

confidence: 85%

“…Composition of sheep milk and its production are infl uenced by a number of factors while the parity and stage of lactation being among the most important (Oravcová et al, 2007). The eff ect of the parity and stage of lactation on milk composition in diff erent sheep breeds were studied by Sevi et al (2000), Aganga et al (2002), Nuda et al (2003), Oravcová et al (2007), Kuchtík et al (2008), Novotná et al (2009) and Konečná et al (2011).…”

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confidence: 99%

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Effect of parity and stage of lactation on milk yield, composition and quality of organic sheep milk

Králíčková¹,

Pokorná²,

Kuchtík³

et al. 2013

Acta Univ. Agric. Silvic. Mendelianae Brun.

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Effect of parity (PA), stage of lactation (SL) and interaction of PA x SL on daily milk yield (DMY), composition (contents of total solids, fat, total protein and lactose) and quality (somatic cell and bacteria counts) of organic sheep milk were evaluated using 20 ewes of East Friesian which were reared on an organic farm in Habří. Ewes were on the 2nd (n = 10) and 3rd (n = 10) lactation. During the experiment ewes were reared on permanent pasture. The milk records and samplings were carried out on average 75th, 132th and 190th day of lactation. All parameters were determined by standard methods. The PA had a significant effect only on somatic cell count (SCC). On the other hand, SL had a significant effect on daily milk yield (DMY), contents of total solids (TS), total protein (TP) and lactose (L). The SL also had a significant effect on total bacteria count (TBC), psychrotrophic bacteria count (PBC), total coliform count (TCC) and SCC. The interaction of the PA x SL had a significant effect on DMY, TS and TP contents and PBC. Positive and significant correlations were found among the SL and contents of TS and TP. Significant and positive correlation was observed between the PA and SCC, but on the other hand, significant and negative correlation was found between the SL and SCC.

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Section: Resultssupporting

confidence: 85%

mentioning

confidence: 99%

Effect of parity and stage of lactation on milk yield, composition and quality of organic sheep milk

Králíčková¹,

Pokorná²,

Kuchtík³

et al. 2013

Acta Univ. Agric. Silvic. Mendelianae Brun.

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“…As for lactose contents depending on the parity, these were a priori very well balanced, but in LC 75 EF 25 and LC 87.5 EF 12.5 crossbreeds were found slight increase of their contents with advanced lactation. In contrast Mioc et al (2009) published opposite trend, whilst Novotná et al (2009) reported the highest L content on the third lactation and the lowest on the second lactation. In conclusion to Tab.…”

Section: Resultsmentioning

confidence: 41%

Effect of different crossbreeds of Lacaune and East Friesian breeds on milk yield and basic milk parameters

Konečná¹,

Kuchtík²,

Králíčková³

et al. 2013

Acta Univ. Agric. Silvic. Mendelianae Brun.

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The aim of the study was to evaluate the eff ect of diff erent crossbreeds (CB) of Lacaune (LC) and East Friesian (EF) breeds (LC 50 EF 50, LC 75 EF 25 and LC 87.5 EF 12.5) on daily milk yield (DMY) and basic milk composition (contents of total solids (TS), fat (F), protein (P), casein (C) and lactose (L) for the whole lactation. The evaluation of the interactions between CB and parity (PA) and between CB and litter size (LS) on above mentioned indicators was also an integral part of this study. The study was carried out on the organic farm in Valašská Bystřice. The factor of CB had a signifi cant eff ect only on DMY and contents of P and C for the whole lactation whilst the higher proportion of LC breed in genotype, the higher DMY and the lower P and C contents. The CB x PA had a signifi cant eff ect on all indicators except for the lactose content when in all CB the DMY increased with the increase of the lactation number. On the other hand, in all CB the contents of TS, F, P and C were relatively very variable depending on the parity. Lastly, as for the interaction between CB and LS, the ewes with twins produced signifi cantly more milk compared to ewes with singles and these ewes had also signifi cantly higher contents of P and C and not signifi cantly higher contents of TS and F.

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“…It was found by some authors that during lactation the contents of total solids (TS), fat (F) and protein (TP) increase, while the lactose (L) content decreases (Novotna et al, 2009;Matutinovic et al, 2011). In contrast, Pugliese et al (2000) reported that the lactose content tends to remain constant over the entire lactation.…”

Section: Introductionmentioning

confidence: 95%

Changes of physico-chemical characteristics, somatic cell count and curd quality during lactation and their relationships in Lacaune ewes

et al. 2017

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The aim of research was to evaluate changes of physico-chemical characteristics, somatic cell count and curd quality during lactation and their relationship in Lacaune ewes. The study was carried out on eighteen ewes of the second lactation on an organic farm in Valašská Bystřice (Czech Republic). It was found that the stage of lactation significantly affected almost all monitored traits except pH value, titratable acidity, somatic cell count and curd quality. The content of total solids, fat, total protein, casein, Ca and P was significantly increased, while daily milk yield and the content of lactose were decreasing with the advancement of lactation. The stage of lactation had a significant effect on the coagulation time that was extended with advanced lactation. Length of the coagulation time was positively correlated with contents of total protein, casein and Ca. In contrast, the curd quality was not affected by the stage of lactation and no significant correlation between the curd quality and other parameters were found, except for the coagulation time (r=0.40). It could be concluded that Lacaune ewes had a satisfactory milk yield and physico-chemical and technological characteristics of milk under relatively extensive nutrition.

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Effects of Lactation Stage and Parity on Milk Yield, Composition and Properties of Organic Sheep Milk

Cited by 21 publications

References 10 publications

Effect of parity and stage of lactation on milk yield, composition and quality of organic sheep milk

Effect of parity and stage of lactation on milk yield, composition and quality of organic sheep milk

Effect of different crossbreeds of Lacaune and East Friesian breeds on milk yield and basic milk parameters

Changes of physico-chemical characteristics, somatic cell count and curd quality during lactation and their relationships in Lacaune ewes

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