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פותח על ידי קלירמאש פתרונות בע"מ -
Nature vs. nurture in the consumption of tannin-rich plants in goats [abstract]
Year:
2012
Source of publication :
International Conference on Goats
Authors :
אונגר, יוג'ין דוד
;
.
כהן, יפעת
;
.
לנדאו, יאן
;
.
מוקלדה, חוסיין
;
.
עמית, מיכל
;
.
פרבולוצקי, אבי
;
.
Volume :
11th meeting
Co-Authors:

Glasser, T. A. and Markovics, A.

Facilitators :
From page:
36
To page:
36
(
Total pages:
1
)
Abstract:

Many Mediterranean brush species have developed a wide array of plant secondary compounds that deter herbivory. In particular, Pistacia lentiscus contains ca. 20% of polyethylene-binding tannins (PEG-b-t), mostly hydrolizable tannins, on DM basis. In contrast, Phillyrea latifolia contains less than 3% of PEG-b-t, mostly flavanoids. In a first study, we showed that, on a yearly basis, P. lentiscus forms 15% of diets ingested by Damascus (Shami) goats, but only 5.6% of diets ingested by Mamber (Baladi) goats, whereas P. latifolia is eaten equally by the two breeds (25% of DM ingested). However, we did not find differences between breeds in the salivary binding capacity of tannins. In a second set of experiments, we found that Damascus goats were more resistant to mixed-species L3 larvae of gastro-intestinal nematodes (GIN) than Mamber goats. Ingesting 1 g kg BW-1 of P. lentiscus tannins reduced fecal egg counts to almost 0 in both breeds but, when subjected to a worm challenge, Mamber goats significantly increased their intake of P. lentiscus, i.e., self-medicated, whereas Damascus goats did not. Intrigued by these behavioral differences, we carried out a cross-fostering experiment, where does from the two breeds raised their own kid or a kid from the other breed, substituted at birth. While kept indoors, does were fed with hay and concentrate, and all kids had equal preference for P. lentiscus and P. latifolia. After does and kids were turned to pasture, kids bred by a Damascus doe increased their preference for P. lentiscus, in contrast with kids which were educated by Mamber does, regardless of their breed. These results indicated that: i. learning (nurture) has a major effect on selective behavior and mothers transmit feeding behaviors to the next generation; ii. pain due to sickness is individual and resistance to sickness has a genetic basis (nature), which may explain the need for self-medication in Mamber but not in Damascus goats; iii. Damascus goat exhibit passive self-medication and Mambers exhibit active self-medication against GIN. Our data suggests a difference between the way foraging habits are acquired in health (nurture) and in sickness (nature).

Note:
Related Files :
animal feeding
goats
pastures / grazing
Tannins
עוד תגיות
תוכן קשור
More details
DOI :
Article number:
0
Affiliations:
Database:
Publication Type:
מאמר מתוך כינוס
;
.
תקציר
;
.
Language:
אנגלית
Editors' remarks:
ID:
54387
Last updated date:
02/03/2022 17:27
Creation date:
05/04/2021 07:57
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Scientific Publication
Nature vs. nurture in the consumption of tannin-rich plants in goats [abstract]
11th meeting

Glasser, T. A. and Markovics, A.

Nature vs. nurture in the consumption of tannin-rich plants in goats

Many Mediterranean brush species have developed a wide array of plant secondary compounds that deter herbivory. In particular, Pistacia lentiscus contains ca. 20% of polyethylene-binding tannins (PEG-b-t), mostly hydrolizable tannins, on DM basis. In contrast, Phillyrea latifolia contains less than 3% of PEG-b-t, mostly flavanoids. In a first study, we showed that, on a yearly basis, P. lentiscus forms 15% of diets ingested by Damascus (Shami) goats, but only 5.6% of diets ingested by Mamber (Baladi) goats, whereas P. latifolia is eaten equally by the two breeds (25% of DM ingested). However, we did not find differences between breeds in the salivary binding capacity of tannins. In a second set of experiments, we found that Damascus goats were more resistant to mixed-species L3 larvae of gastro-intestinal nematodes (GIN) than Mamber goats. Ingesting 1 g kg BW-1 of P. lentiscus tannins reduced fecal egg counts to almost 0 in both breeds but, when subjected to a worm challenge, Mamber goats significantly increased their intake of P. lentiscus, i.e., self-medicated, whereas Damascus goats did not. Intrigued by these behavioral differences, we carried out a cross-fostering experiment, where does from the two breeds raised their own kid or a kid from the other breed, substituted at birth. While kept indoors, does were fed with hay and concentrate, and all kids had equal preference for P. lentiscus and P. latifolia. After does and kids were turned to pasture, kids bred by a Damascus doe increased their preference for P. lentiscus, in contrast with kids which were educated by Mamber does, regardless of their breed. These results indicated that: i. learning (nurture) has a major effect on selective behavior and mothers transmit feeding behaviors to the next generation; ii. pain due to sickness is individual and resistance to sickness has a genetic basis (nature), which may explain the need for self-medication in Mamber but not in Damascus goats; iii. Damascus goat exhibit passive self-medication and Mambers exhibit active self-medication against GIN. Our data suggests a difference between the way foraging habits are acquired in health (nurture) and in sickness (nature).

Scientific Publication
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